Unlock instant, AI-driven research and patent intelligence for your innovation.

High-filling starch-based thermoplastic composite material and preparation method thereof

A technology of composite materials and thermoplastics, applied in the field of starch-based materials, can solve problems such as high flow temperature, inability to form, and large effect, and achieve the effect of wide application range and improved work performance

Inactive Publication Date: 2020-04-24
HUNAN UNIV OF TECH
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure starch has a strong hydrogen bond effect, which leads to the flow temperature of the material being higher than the decomposition temperature, and cannot be molded. The starch must be modified and plasticized before it can be used to manufacture products.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example provides a method for preparing a high-filling starch-based thermoplastic composite material. The raw materials used are: 80 mesh corn starch: 60 parts, polyethylene glycol with a molecular weight of 1000: 1 part, ethylene-butyl acrylate: 4 parts, Polypropylene: 45 parts, polyethylene wax: 1 part, antioxidant 1010: 0.25 part, antioxidant 1076: 0.25 part; the preparation method comprises the following steps:

[0028] S1. Put cornstarch, polyethylene glycol, and ethylene-butyl acrylate into the high mixer and mix evenly at 1500rpm, then add other raw materials and mix evenly for later use;

[0029] S2. Put the mixture in step S1 into a parallel twin-screw extruder to extrude and granulate, wherein the temperature of the parallel twin-screw extruder is set from feeding to mold: 150°C~160°C~165°C~170°C ℃~170℃~180℃~170℃~170℃~175℃~170℃~165℃.

[0030] The tensile strength of the highly filled starch-based thermoplastic composite material prepared in this example ...

Embodiment 2

[0032] This example provides a method for preparing a high-filling starch-based thermoplastic composite material. The raw materials used are: 60-mesh corn starch: 70 parts, polyethylene glycol with a molecular weight of 2000: 4 parts, polyethylene: 30 parts, stearic acid : 5 parts, antioxidant 1010: 0.5 part, antioxidant 1076: 0.5 part; the preparation method comprises the following steps:

[0033] S1. Put cornstarch and polyethylene glycol into the high mixer and mix evenly at 1500rpm, then add other raw materials and mix evenly for later use;

[0034] S2. Put the mixture in step S1 into a parallel twin-screw extruder to extrude and granulate, wherein the temperature of the parallel twin-screw extruder is set from feeding to mold: 150°C~160°C~165°C~170°C ℃~170℃~180℃~170℃~170℃~175℃~170℃~165℃.

[0035] The tensile strength of the highly filled starch-based thermoplastic composite material prepared in this example is 24MPa, the elongation at break is 120%, and the impact streng...

Embodiment 3

[0037] Referring to Example 2, this example provides a method for preparing a high-filling starch-based thermoplastic composite material. The difference from Example 1 is that the raw materials used are 100-mesh cornstarch: 55 parts of polyethylene glycol with a molecular weight of 750 : 2 parts, polystyrene: 45 parts, stearic acid: 2 parts, antioxidant 1010: 0.3 parts.

[0038] The tensile strength of the highly filled starch-based thermoplastic composite material prepared in this example is 20MPa, the elongation at break is 113%, and the impact strength without product is 9KJ / m 2 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-filling starch thermoplastic composite material and a preparation method thereof. The high-filling starch thermoplastic composite material is composed of the following raw materials in parts by mass: 50-70 parts of corn starch, 2-8 parts of a plasticizer, 30-50 parts of thermoplastic plastic, 1-5 parts of a lubricant and 0.3-1 part of an antioxidant. The high-fillingstarch-based thermoplastic composite material is prepared by carrying out plasticization and compatibility treatment on corn starch by adopting polyethylene glycol and ethylene-butyl acrylate, so that the working performance of the composite material is improved, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of starch-based materials, in particular to a high-filling starch-based thermoplastic composite material and a preparation method thereof. Background technique [0002] Starch is a renewable and recyclable green material from natural plants. It can not only be used as food for human use, but also widely used in the fields of chemical industry and new materials to prepare various composite materials. Because of its excellent biodegradable properties, starch is usually used as a filler to prepare thermoplastic bio-based composites with high bio-carbon content, which are widely used in disposable products. In the current environment where petrochemical resources are increasingly scarce and white pollution is becoming more and more serious. people's attention. Film is a sheet material with one thickness prepared by using polymer materials through various processes. It is widely used in the packaging field becau...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L71/02C08L23/08C08L23/12C08L23/06C08L25/06C08K5/134C08K5/09
CPCC08K2201/014C08L3/02C08L2205/02C08L2205/03C08L2205/035C08L2205/08C08L71/02C08L23/0869C08L23/12C08L23/06C08K5/1345C08K5/09C08L25/06
Inventor 曾广胜江太君陈一孟聪胡灿尹琛刘水长
Owner HUNAN UNIV OF TECH